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Consider the tight-binding Hamiltonian: $$ H = \sum_i \epsilon_i a^\dagger_i a_i + \sum_i V_i (a^\dagger_i a_{i+1} + a^\dagger_{i+1} a_i) $$ Random on-site energy $\epsilon_i$ leads to the famous Anderson localization. I wonder if there's an analog localization with random hopping $V_i$. I've carried out some numeric tests and the wavefunction seems to be localized.

liwt31
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